Class: BabySqueel::JoinDependency::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/baby_squeel/join_dependency.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(relation) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/baby_squeel/join_dependency.rb', line 61

def initialize(relation)
  @join_dependency = build(relation, collect_joins(relation))
end

Instance Attribute Details

#join_dependency ⇒ Object (readonly)

Returns the value of attribute join_dependency.



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# File 'lib/baby_squeel/join_dependency.rb', line 59

def join_dependency
  @join_dependency
end

Instance Method Details

#find_alias(associations) ⇒ Object

Find the alias of a BabySqueel::Association, by passing a list (in order of chaining) of associations and finding the respective JoinAssociation at each level.



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# File 'lib/baby_squeel/join_dependency.rb', line 68

def find_alias(associations)
  if BabySqueel::ActiveRecord::VersionHelper.at_least_6_1?
    # construct_tables! got removed by rails
    # https://github.com/rails/rails/commit/590b045ee2c0906ff162e6658a184afb201865d7
    #
    # construct_tables_for_association! is a method from the polyamorous (ransack) gem
    join_root = join_dependency.send(:join_root)
    join_root.each_children do |parent, child|
      join_dependency.construct_tables_for_association!(parent, child)
    end
  elsif BabySqueel::ActiveRecord::VersionHelper.at_least_5_2_3?
    # If we tell join_dependency to construct its tables, Active Record
    # handles building the correct aliases and attaching them to its
    # JoinDepenencies.
    join_dependency.send(:construct_tables!, join_dependency.send(:join_root))
  end

  join_association = find_join_association(associations)
  join_association.table
end